Python Pandas - 建立閉區間並檢查端點的存在


要建立閉區間,請使用 **pandas.Interval()** 並設定 closed 引數。要檢查兩個端點的存在,請使用 in 屬性。

首先,匯入所需的庫:

import pandas as pd

使用值為“both”的“closed”引數設定閉區間。閉區間(在數學中用方括號表示)包含其端點,例如閉區間 [0, 5] 的特徵是 0 <= x <= 5

interval = pd.Interval(left=0, right=20, closed='both')

顯示區間

print("Interval...\n",interval)

檢查區間中是否存在元素。這表明 closed = both 包含其端點

print("\nThe left-most element exists in the Interval? = \n",0 in interval)
print("\nThe right-most element exists in the Interval? = \n",20 in interval)

示例

以下是程式碼:

import pandas as pd

# Closed interval set using the "closed" parameter with value "both"
# A closed interval (in mathematics denoted by square brackets) contains its endpoints,
# i.e. the closed interval [0, 5] is characterized by the conditions 0 <= x <= 5.
interval = pd.Interval(left=0, right=20, closed='both')

# display the interval
print("Interval...\n",interval)

# display the interval length
print("\nInterval length...\n",interval.length)

# check for the existence of an element in an Interval
# This shows that closed = both contains its endpoints
print("\nThe left-most element exists in the Interval? = \n",0 in interval)
print("\nThe right-most element exists in the Interval? = \n",20 in interval)

輸出

這將產生以下程式碼:

Interval...
[0, 20]

Interval length...
20

更新於:2021年10月20日

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